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  • 1
    Online Resource
    Online Resource
    Computation of Melting Dissipative Magnetohydrodynamic Nanofluid Bioconvection with Second-order Slip and Variable Thermophysical Properties
    MDPI AG ; 2019
    In:  Applied Sciences Vol. 9, No. 12 ( 2019-06-19), p. 2493-
    Details
    In: Applied Sciences, MDPI AG, Vol. 9, No. 12 ( 2019-06-19), p. 2493-
    Abstract: This paper studies the combined effects of viscous dissipation, first and second-order slip and variable transport properties on phase-change hydromagnetic bio-nanofluid convection flow from a stretching sheet. Nanoscale materials possess a much larger surface to volume ratio than bulk materials, significantly modifying their thermodynamic and thermal properties and substantially lowering the melting point. Gyrotactic non-magnetic micro-organisms are present in the nanofluid. The transport properties are assumed to be dependent on concentration and temperature. Via appropriate similarity variables, the governing equation with boundary conditions are converted to nonlinear ordinary differential equations and are solved using the BVP4C subroutine in the symbolic software MATLAB. The non-dimensional boundary value features a melting (phase change) parameter, temperature-dependent thermal conductive parameter, first as well as second-order slip parameters, mass diffusivity parameter, Schmidt number, microorganism diffusivity parameter, bioconvection Schmidt number, magnetic body force parameter, Brownian motion and thermophoresis parameters. Extensive computations are visualized for the influence of these parameters. The present simulation is of relevance in the fabrication of bio-nanomaterials for bio-inspired fuel cells.
    Type of Medium: Online Resource
    ISSN: 2076-3417
    URL: Article
    DOI: 10.3390/app9122493
    Language: English
    Publisher: MDPI AG
    Publication Date: 2019
    detail.hit.zdb_id: 2704225-X
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  • 2
    Online Resource
    Online Resource
    Influence of Stefan blowing on nanofluid flow submerged in microorganisms with leading edge accretion or ablation
    Springer Science and Business Media LLC ; 2017
    In:  Journal of the Brazilian Society of Mechanical Sciences and Engineering Vol. 39, No. 11 ( 2017-11), p. 4519-4532
    Details
    In: Journal of the Brazilian Society of Mechanical Sciences and Engineering, Springer Science and Business Media LLC, Vol. 39, No. 11 ( 2017-11), p. 4519-4532
    Type of Medium: Online Resource
    ISSN: 1678-5878 , 1806-3691
    URL: Article
    DOI: 10.1007/s40430-017-0877-7
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2017
    detail.hit.zdb_id: 2145288-X
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  • 3
    Online Resource
    Online Resource
    Unsteady three-dimensional stagnation point magnetohydrodynamic flow of bionanofluid with variable properties
    SAGE Publications ; 2018
    In:  Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems Vol. 232, No. 4 ( 2018-12), p. 123-134
    Details
    In: Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems, SAGE Publications, Vol. 232, No. 4 ( 2018-12), p. 123-134
    Abstract: Unsteady three-dimensional laminar stagnation point forced convective boundary layer magnetohydrodynamic flow of a bionanofluid with variable transport properties is studied theoretically and numerically. Thermal convective and zero mass flux boundary conditions are incorporated in this study. The transport properties are assumed to be a function of nanoparticle volume fraction to get physically realistic results. The dimensional boundary layer equations along with the coupled boundary conditions are transformed via similarity transformations into a system of ordinary differential equations. The transformed equations are solved numerically using the Runge–Kutta–Fehlberg fourth-, fifth-order numerical method. The effect of selected governing parameters, namely, viscosity, thermal conductive, mass diffusivity, microorganism diffusivity, magnetic field and bioconvection Schmidt number, on the dimensionless velocity, temperature, nanoparticle volume fraction, microorganism, skin friction coefficient, heat transfer rate, mass transfer rate and microorganism transfer rate, is illustrated graphically and interpreted in detail. Comparisons with previous works are carried out for some limiting cases and found to be in good agreement.
    Type of Medium: Online Resource
    ISSN: 2397-7914 , 2397-7922
    URL: Article
    DOI: 10.1177/2397791418817844
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2961164-7
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  • 4
    Online Resource
    Online Resource
    Significance of viscous dissipation on the dynamics of ethylene glycol conveying diamond and silica nanoparticles through a diverging and converging channel
    Springer Science and Business Media LLC ; 2022
    In:  Journal of Thermal Analysis and Calorimetry Vol. 147, No. 1 ( 2022-01), p. 661-674
    Details
    In: Journal of Thermal Analysis and Calorimetry, Springer Science and Business Media LLC, Vol. 147, No. 1 ( 2022-01), p. 661-674
    Type of Medium: Online Resource
    ISSN: 1388-6150 , 1588-2926
    URL: Article
    DOI: 10.1007/s10973-020-10335-4
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2022
    detail.hit.zdb_id: 2017304-0
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  • 5
    Online Resource
    Online Resource
    Nanofluid slip flow over a stretching cylinder with Schmidt and Péclet number effects
    AIP Publishing ; 2016
    In:  AIP Advances Vol. 6, No. 5 ( 2016-05-01)
    Details
    In: AIP Advances, AIP Publishing, Vol. 6, No. 5 ( 2016-05-01)
    Abstract: A mathematical model is presented for three-dimensional unsteady boundary layer slip flow of Newtonian nanofluids containing gyrotactic microorganisms over a stretching cylinder. Both hydrodynamic and thermal slips are included. By applying suitable similarity transformations, the governing equations are transformed into a set of nonlinear ordinary differential equations with appropriate boundary conditions. The transformed nonlinear ordinary differential boundary value problem is then solved using the Runge-Kutta-Fehlberg fourth-fifth order numerical method in Maple 18 symbolic software. The effects of the controlling parameters on the dimensionless velocity, temperature, nanoparticle volume fractions and microorganism motile density functions have been illustrated graphically. Comparisons of the present paper with the existing published results indicate good agreement and supports the validity and the accuracy of our numerical computations. Increasing bioconvection Schmidt number is observed to depress motile micro-organism density function. Increasing thermal slip parameter leads to a decrease in temperature. Thermal slip also exerts a strong influence on nano-particle concentration. The flow is accelerated with positive unsteadiness parameter (accelerating cylinder) and temperature and micro-organism density function are also increased. However nano-particle concentration is reduced with positive unsteadiness parameter. Increasing hydrodynamic slip is observed to boost temperatures and micro-organism density whereas it decelerates the flow and reduces nano-particle concentrations. The study is relevant to nano-biopolymer manufacturing processes.
    Type of Medium: Online Resource
    ISSN: 2158-3226
    URL: Article
    DOI: 10.1063/1.4951675
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2016
    detail.hit.zdb_id: 2583909-3
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  • 6
    Online Resource
    Online Resource
    Hyperbolic Tangent Fluid Model for Stagnation Flow of Hybrid Nanofluid Over a Stretching Sheet
    Akademia Baru Publishing ; 2023
    In:  Journal of Advanced Research in Fluid Mechanics and Thermal Sciences Vol. 107, No. 1 ( 2023-07-31), p. 87-101
    Details
    In: Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, Akademia Baru Publishing, Vol. 107, No. 1 ( 2023-07-31), p. 87-101
    Abstract: The problem of hyperbolic tangent fluid model for stagnation flow of hybrid nanofluid over a stretching sheet is investigated. Constitutive relation of an incompressible hyperbolic tangent model as well as consideration of thermal radiation and Newtonian heating is taken into account. The boundary layer problem is formulated to nonlinear partial differential equations which is then transformed into ordinary differential equations by using similarity transformation. The equations including the boundary conditions are solved numerically using bvp4c in the MATLAB software. A comparison with previous findings shows an excellent agreement. The effect of governing parameters such as power law index, Weissenberg number, suction/injection, radiation and Biot number is investigated. The changes in the value of volume fraction of diamond and silicon dioxide are also analyzed. Characteristics for the significant variables are graphically presented and the numerical results are tabulated. The velocity behavior is significantly influenced by the volume fraction of diamond and silicon dioxide and other physical parameters. Meanwhile, the temperature is influenced by the radiation parameter. This study provides conclusive evidence that increasing the volume fraction of diamond nanoparticles significantly enhances the heat transfer rate. The increment by 0.1 (10%) of the volume fraction of diamond nanoparticles increases the heat transfer rate approximately by 3%. These findings underscore the potential of integrating these nanoparticles to improve thermal performance across diverse applications.
    Type of Medium: Online Resource
    ISSN: 2289-7879
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.37934/arfmts.107.1
    DOI: 10.37934/arfmts
    DOI: 10.37934/arfmts.107.1.87101
    Language: Unknown
    Publisher: Akademia Baru Publishing
    Publication Date: 2023
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  • 7
    Online Resource
    Online Resource
    Energy Based Logic Mining Analysis with Hopfield Neural Network for Recruitment Evaluation
    MDPI AG ; 2020
    In:  Entropy Vol. 23, No. 1 ( 2020-12-30), p. 40-
    Details
    In: Entropy, MDPI AG, Vol. 23, No. 1 ( 2020-12-30), p. 40-
    Abstract: An effective recruitment evaluation plays an important role in the success of companies, industries and institutions. In order to obtain insight on the relationship between factors contributing to systematic recruitment, the artificial neural network and logic mining approach can be adopted as a data extraction model. In this work, an energy based k satisfiability reverse analysis incorporating a Hopfield neural network is proposed to extract the relationship between the factors in an electronic (E) recruitment data set. The attributes of E recruitment data set are represented in the form of k satisfiability logical representation. We proposed the logical representation to 2-satisfiability and 3-satisfiability representation, which are regarded as a systematic logical representation. The E recruitment data set is obtained from an insurance agency in Malaysia, with the aim of extracting the relationship of dominant attributes that contribute to positive recruitment among the potential candidates. Thus, our approach is evaluated according to correctness, robustness and accuracy of the induced logic obtained, corresponding to the E recruitment data. According to the experimental simulations with different number of neurons, the findings indicated the effectiveness and robustness of energy based k satisfiability reverse analysis with Hopfield neural network in extracting the dominant attributes toward positive recruitment in the insurance agency in Malaysia.
    Type of Medium: Online Resource
    ISSN: 1099-4300
    URL: Article
    DOI: 10.3390/e23010040
    Language: English
    Publisher: MDPI AG
    Publication Date: 2020
    detail.hit.zdb_id: 2014734-X
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  • 8
    Online Resource
    Online Resource
    Exploration of Thermal-Diffusion and Diffusion-Thermal Effects on the Motion of Temperature-Dependent Viscous Fluid Conveying Microorganism
    Springer Science and Business Media LLC ; 2019
    In:  Arabian Journal for Science and Engineering Vol. 44, No. 9 ( 2019-9), p. 8023-8033
    Details
    In: Arabian Journal for Science and Engineering, Springer Science and Business Media LLC, Vol. 44, No. 9 ( 2019-9), p. 8023-8033
    Type of Medium: Online Resource
    ISSN: 2193-567X , 2191-4281
    URL: Article
    DOI: 10.1007/s13369-019-04012-4
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2019
    detail.hit.zdb_id: 2471504-9
    SSG: 11
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  • 9
    Online Resource
    Online Resource
    NUMERICAL STUDY OF SLIP EFFECTS ON UNSTEADY ASYMMETRIC BIOCONVECTIVE NANOFLUID FLOW IN A POROUS MICROCHANNEL WITH AN EXPANDING/CONTRACTING UPPER WALL USING BUONGIORNO’S MODEL
    World Scientific Pub Co Pte Ltd ; 2017
    In:  Journal of Mechanics in Medicine and Biology Vol. 17, No. 03 ( 2017-05), p. 1750059-
    Details
    In: Journal of Mechanics in Medicine and Biology, World Scientific Pub Co Pte Ltd, Vol. 17, No. 03 ( 2017-05), p. 1750059-
    Abstract: In this paper, the unsteady fully developed forced convective flow of viscous incompressible biofluid that contains both nanoparticles and gyrotactic microorganisms in a horizontal micro-channel is studied. Buongiorno’s model is employed. The upper channel wall is either expanding or contracting and permeable and the lower wall is static and impermeable. The plate separation is therefore a function of time. Velocity, temperature, nanoparticle species (mass) and motile microorganism slip effects are taken into account at the upper wall. By using the appropriate similarity transformation for the velocity, temperature, nanoparticle volume fraction and motile microorganism density, the governing partial differential conservation equations are reduced to a set of similarity ordinary differential equations. These equations under prescribed boundary conditions are solved numerically using the Runge–Kutta–Fehlberg fourth-fifth-order numerical quadrature in the MAPLE symbolic software. Excellent agreement between the present computations and solutions available in the literature (for special cases) is achieved. The key thermofluid parameters emerging are identified as Reynolds number, wall expansion ratio, Prandtl number, Brownian motion parameter, thermophoresis parameter, Lewis number, bioconvection Lewis number and bioconvection Péclet number. The influence of all these parameters on flow velocity, temperature, nanoparticle volume fraction (concentration) and motile microorganism density function is elaborated. Furthermore, graphical solutions are included for skin friction, wall heat transfer rate, nanoparticle mass transfer rate and microorganism transfer rate. Increasing expansion ratio is observed to enhance temperatures and motile microorganism density. Both nanoparticle volume fraction and microorganism increases with an increase in momentum slip. The dimensionless temperature and microorganism increases as wall expansion increases. Applications of the study arise in advanced nanomechanical bioconvection energy conversion devices, bio-nano-coolant deployment systems, etc.
    Type of Medium: Online Resource
    ISSN: 0219-5194 , 1793-6810
    URL: Article
    DOI: 10.1142/S0219519417500592
    Language: English
    Publisher: World Scientific Pub Co Pte Ltd
    Publication Date: 2017
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  • 10
    Online Resource
    Online Resource
    Unsteady Magnetoconvective Flow of Bionanofluid with Zero Mass Flux Boundary Condition
    Penerbit Universiti Kebangsaan Malaysia (UKM Press) ; 2017
    In:  Sains Malaysiana Vol. 46, No. 02 ( 2017-02-28), p. 327-333
    Details
    In: Sains Malaysiana, Penerbit Universiti Kebangsaan Malaysia (UKM Press), Vol. 46, No. 02 ( 2017-02-28), p. 327-333
    Type of Medium: Online Resource
    ISSN: 0126-6039
    URL: Issue
    URL: Journal
    URL: Article
    DOI: 10.17576/jsm-2017-4602
    DOI: 10.17576/jsm
    DOI: 10.17576/jsm-2017-4602-18
    Language: Unknown
    Publisher: Penerbit Universiti Kebangsaan Malaysia (UKM Press)
    Publication Date: 2017
    detail.hit.zdb_id: 2751030-X
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